“When I first got here it was quite a shock,” he says. “I’d never been before so it was all quite new. But it’s a great place, and every day I’ve tried to do some sightseeing. I’ve been to the Giant’s Causeway and Carrick-a-Rede Rope Bridge.”

“It’s not an accent I’ve ever been familiar with,” says Rupert. “It’s such a mix of different sounds. I had to start from the beginning, but Brendan Gunn, the voice coach, made a CD with all my lines, which helped.”

“It’s a totally different world,” Rupert says. “It doesn’t compare. Today for example we’re doing 12 scenes. On Potter we do a scene a day, a scene a week sometimes. A huge percentage of it is greenscreen, but there’s none of that on this.

“It was never a conscious thing to move away from kids’ movies, it just happened. In the space of a week I got the script, met the producers and that was that. It was a bit of a whirlwind. I’m quite nervous about how it’ll be received!”

And speaking of Potter: “Number six is coming out in November [it was later pushed back to July 2009]. Then there’s the big one, number seven, which is being split into two. It’s going to be a year-and-a-half shoot starting in February. I’ve got another thing called Wild Target in between, which is being filmed in the Isle of Man.”

“I couldn’t have asked for two nicer boys,” [Kimberley] says. “There have been some challenging scenes but they’ve been so sweet and lovely and I feel really easy and safe with them, which means I can do my job better.”

“He’s been brilliant,” says [Glenn]. “He’s a gentleman and very easy to get on with. We couldn’t have wished for a more easygoing bloke, and he’s incredibly talented.”